CN2231115Y - treadmill - Google Patents

Abstract

A running machine is composed of two frames with resistance wheels pivoted to their front ends, and a magnetically controlled braking unit consisting of a magnetically non-conductive material coated on the surface of resistance wheel, a magnet seat under resistance wheel, multiple permanent magnets on magnet seat, and a steel cable connected to magnet seat and regulating button. The inner sides of the tail ends of the two frames are respectively provided with corresponding sliding grooves, the two sliding grooves are respectively provided with an adjusting bolt, the two ends of the rear roller mandrel are provided with screw holes, and the adjusting bolts penetrate through the screw holes, so that the rear roller can slide in the sliding grooves along with the rotation of the adjusting bolts to prop and stretch the driving belt.

Description

treadmill

The utility model relates to a treadmill, in particular to a treadmill capable of controlling the rotational speed and tension of a driving belt.

As shown in Fig. 1, in the conventional treadmill 10, two rollers 12, 13 are respectively arranged at the front and rear ends of a roughly rectangular frame 11, and two resistance wheels are sheathed at both ends of the roller 12 at the front end. 14. A driving belt 15 is sleeved between the two rollers 12 and 13, and an armrest frame 16 is welded on both sides of the frame 11. When the user starts to walk or run on the driving belt 15, the driving belt 15 can drive the two rollers 12, 13 to roll, so that the running belt 15 can rotate circularly on the rollers 12, 13, and because the resistance wheel 14 itself has a considerable Weight, so the user must expend considerable power to drive the drive belt 15 and the rollers 12, 13 to rotate, thereby making the treadmill have the effect of exercising and fitness, but this treadmill has the following disadvantages:

(1) In the past, the resistance wheel 14 of the treadmill was heavy because of its own weight. Although the load of the roller 12 could be increased to make the driving belt 15 suffer resistance when rotating, such a situation could only be maintained when the user started running, and a relatively heavy wheel had to be used. However, after a period of time, the speed of the rollers 12 and 13 will become faster and faster, and the resistance wheel 14 will no longer be able to perform its function, but will increase the speed of the rollers 12 and 13, so that the speed of the driving belt 15 will be accelerated. The running speed of the user must also be accelerated, and it is easy to fall down because the footsteps cannot keep up with the speed of the drive belt 15, causing sports injuries.

(2) The resistance produced by the resistance wheel 14 is fixed. For the user, if the resistance is too large during exercise, it will be quite laborious, and it is easy to lose the interest of stepping on it, but if the resistance is too small, the appropriate exercise effect cannot be achieved, so Therefore, this treadmill 10 cannot meet the needs of users with different ages, builds, and physical strengths.

(3) When the driving belt 15 bears the downward load when the user pedals and drives for a long time, the driving belt 15 will be overstretched and loosen, causing the driving belt 15 to loosen from the rollers 12 and 13, resulting in 15 does not turn smoothly.

Therefore, the purpose of this utility model is to provide a treadmill that utilizes a simple reluctance component and an adjusting bolt to control the speed of the driving belt and the tension of the tension. It can provide multi-stage control resistance, increase the safety of use and is suitable for used by different users.

The treadmill of the utility model comprises two frames, and a bearing plate is fixedly arranged on the top surfaces of the two frames, and a front and rear roller mandrels are horizontally pivoted respectively in the front and rear sections of the two frames. A driving belt is sleeved on the rear roller, a resistance wheel is sleeved at both ends of the front roller, and an armrest frame is arranged horizontally above the treadmill, and the feature is that the frame is provided with a magnetic control wheel near one of the resistance wheels. The moving group, which includes a non-magnetic material covered on the surface of the resistance wheel, a positioning seat fixed on the inner wall of the front section of one of the racks, a magnet seat ring set under the resistance wheel, several magnet seats The permanent magnet on the top and a steel cable with one end passing through the positioning seat and fixedly connected to one end of the magnet seat, and the other end passing through the inner edge of the armrest frame and fixedly connected to the adjustment button, the magnet seat and the permanent magnet generate interference to the rotation of the resistance wheel The reluctance is adjusted by turning the adjustment knob to adjust the length of the cable, and the distance between the magnet seat and the resistance wheel is controlled to adjust the reluctance to control the speed of the treadmill drive belt. Corresponding sliding grooves are respectively provided on the inner sides of the end sections of the two racks, and an adjusting bolt is respectively arranged in the two sliding grooves, screw holes are arranged at both ends of the rear roller mandrel, and the adjusting bolts pass through the screw holes, so that The rear roller can slide in the sliding groove with the rotation of the adjusting bolt to stretch the driving belt.

Below by preferred embodiment and accompanying drawing the treadmill of the present utility model is described in detail, in the accompanying drawing:

Fig. 1 is a perspective view of a conventional treadmill.

Fig. 2 is a perspective view of a preferred embodiment of the utility model.

Fig. 3 is a perspective view of the front section of the body of the preferred embodiment of the utility model.

Fig. 4 is a perspective view of the rear section of the body of the preferred embodiment of the present invention.

Fig. 5 is a side sectional view of a preferred embodiment of the present invention.

FIG. 2 is a perspective view of a preferred embodiment of the present invention. The treadmill of the present invention includes a machine body 20 and a magnetically controlled braking group 30 .

The body 20 includes two parallel and corresponding frames 21 and a bearing plate 22 erected on the top surfaces of the two frames 21. A front roller 24 and two resistance wheels 25 are arranged on the inside of the front section of the two frames 21. The mandrel 241 of the front roller 24 is arranged horizontally between the inner sides of the two frames 21 , and the two resistance wheels 25 are sheathed on the two ends of the front roller 24 respectively. A rear roller 26 is laterally pivoted on the inner side of the rear section of the two frames 21 , and a drive belt 27 is sheathed on the front and rear rollers 24 , 26 and the bearing plate 22 . A sleeve 23 is respectively pierced on the front sections of the two frames 21, and an armrest frame 28 that is inverted U-shaped and horizontally arranged on the top of the body 20 is sleeved on the two sleeves 23. A display 282 and an adjustment button 283 are arranged on the pole 281 at the top section of the sleeve 23 , and the armrest frame 28 .

As shown in FIG. 3 , the magnetic control brake assembly 30 includes a non-magnetic material 31 , a positioning seat 32 , a magnet seat 33 and a steel cable 34 . Non-magnetic material 31 (the utility model adopts copper sheet 31) is screw-fixed and covered on the wheel surface of one of the resistance wheels 25; the positioning seat 32 is roughly inverted L-shaped, and is welded on the front section inner wall of the frame 21; the magnet seat 33 The ring is arranged below the resistance wheel 25; one end of the steel cable 34 passes through the positioning seat 32 and is fixedly connected to one end of the magnet seat 33, and a spring 321 is sleeved between the end faces of the positioning seat 32 and the magnet seat 33 around the steel cable 34 ring, The magnet base 33 has resilience; a plurality of permanent magnets 331 are arranged on the ring surface of the magnet base 33 , and the magnetic field generated by the permanent magnets 331 is used to interfere with the rotation of the resistance wheel 25 . The other end of the steel cable 34 passes through the inner edge of the armrest frame 28 and is fixedly connected to the adjustment button 283 (as shown in FIG. 5 ). By rotating the adjustment button 283, the steel cable 34 can be retracted and loosened to adjust the steel cable 34. The length of the control magnet seat 33 relative to the distance of the resistance wheel 25.

As shown in Figure 4, the inner ends of the two frames 21 are respectively provided with a corresponding sliding groove 211, and the two ends of the mandrel 261 of the rear roller 26 are slid into the two sliding grooves 211, and the two ends of the mandrel 261 are respectively A horizontal screw hole 262 is provided; the ends of the two frames 21 are respectively covered with a decorative cover 29, and each decorative cover 29 is provided with a perforation 292 corresponding to the screw hole 262, and an adjusting bolt 291 is inserted through the perforation 292 respectively. Insert and pass through the screw hole 262 to be accommodated in the sliding groove 211, and the rotation of the adjusting bolt 291 in the screw hole 262 drives the mandrel 261 to move on the adjusting bolt 291, so that the rear roller 26 is displaced back and forth.

As shown in Figure 5, the permanent magnet 331 on the top surface of the magnet seat 33 produces closed magnetic lines of force, and the resistance wheel 25 above the permanent magnet 331 just passes through this area of magnetic force lines, and the surface of the resistance wheel 25 is provided with a circle of non-magnetic material 31 (such as copper sheets), so when the resistance wheel 25 rotates, the non-magnetic material 31 on its wheel surface can cut, block and close the magnetic force lines, destroy the integrity of the magnetic force lines, and utilize the magnetic force lines that are cut and segmented to generate The braking resistance of mutual pulling makes the resistance wheel 25 subject to a braking resistance and the rotation is hindered, that is, the front and rear rollers 24, 26 and the drive belt 27 are subjected to a braking resistance when rotating, and it is necessary to apply this moment. A larger driving force can drive the drive belt 27 to rotate. If the adjustment button 283 is tightened to make the steel cable 34 retract and shorten, thereby pulling the magnet seat 33 upwards, the closer the permanent magnet 331 is to the resistance wheel 25, the greater the magnetic field that the resistance wheel 25 is subjected to, and the greater the braking resistance produced. Strong, that is, it is more difficult to drive the drive belt 27 for circular rotation. The length of the steel cable 34 is adjusted by the adjustment knob 283, and the elastic fit of the spring 321 enables the magnet seat 33 to adjust the distance from the resistance wheel 25 to present multi-stage braking resistances with different strengths.

As shown in Figures 2 and 4, when the drive belt 27 is loose due to the long-term load of the user's trampled drive, the adjusting bolt 291 in the decorative cover 29 can be rotated in the screw hole 262 of the spindle 261 to make the drive belt 27 loose. The mandrel 261 is displaced backward on the adjusting bolt 291, and the rear roller 26 is also moved backward at the same time, thereby stretching the driving belt 27 to keep the driving belt 27 in a state of elasticity and proper tightness.

The utility model can not only effectively generate braking resistance and interfere with the rotating speed of the resistance wheel 25, but also does not generate noisy sound when actuating, so that the rotating speed of the drive belt 27 is fixed to ensure the safety of the user, and can be adjusted according to the needs of the individual's body. The amount of exercise and multi-stage adjustment of braking resistance make the treadmill function of the utility model more perfect and safer.

Advantage and effect of the present utility model are as follows.

(1) The resistance wheel 25 is disturbed by the magnetic field of the permanent magnet 331 and subjected to a braking resistance, so that the rotation of the front roller shaft 24 is blocked to maintain a certain speed, and the rotation of the drive belt 27 is also blocked and maintained at a certain speed. The situation that the speed cannot be controlled occurs to ensure the safety of users.

(2) The user uses the adjustment button 283 to adjust the length of the steel cable 34, controls the distance between the magnet seat 33 and the resistance wheel 25, and generates braking resistance of different strengths by changing the size of the magnetic field. The amount of exercise can be adjusted in multiple stages, and the braking resistance can be adjusted in multiple stages. Therefore, the utility model can satisfy users of different ages, shapes, and physical strengths, and achieve the effect of exercise and fitness.

(3) The driving belt 27 can adjust the tightness of it and the front and rear rollers 24, 26 and the stretching degree of itself, so that the driving belt 27 can keep the smoothness of rotation and increase the convenience of use.

Claims (2)

1. A treadmill, comprising two parallel and corresponding frames and a bearing plate erected on the top surfaces of the two frames. The front section of the two frames is provided with a front roller and two resistance wheels. The front roller The mandrel is horizontally pivoted between the inner sides of the two frames, and the two resistance wheels are respectively sleeved on the two ends of the front rollers. A rear roller is pivoted between the inner sides of the rear sections of the two frames. The front and rear rollers and the bearing plate A driving belt is set, and an inverted U-shaped handrail frame is fixed horizontally on the two racks, and the characteristics are as follows: The frame is provided with a magnetic control brake group near one of the resistance wheels, and the magnetic control brake group includes a non-magnetic material, a positioning seat, a magnet seat and a steel cable, and the non-magnetic material is covered on the On the wheel surface of the resistance wheel, the positioning seat is in an inverted L shape, and is fixed on the inner wall of the front section of one of the racks, and the magnet seat ring is arranged below the resistance wheel, and the magnet seat ring surface A plurality of permanent magnets are fixed, one end of the steel cable passes through the positioning seat and is fixedly connected with one end of the magnet seat, the other end of the steel cable passes through the inner edge of the armrest frame, and the armrest frame is provided with a fixed adjustment knob; The inner end sections of the two frames are respectively provided with a corresponding sliding groove, and the two ends of the mandrel of the rear roller are slid in the sliding groove, and the two ends of the mandrel of the rear roller are respectively provided with a screw holes, and an adjusting bolt respectively passes through the screw hole and is arranged in the sliding groove. 2. The treadmill according to claim 1, characterized in that: A spring is sleeved around the steel cable ring between the positioning seat and the end face of the magnet seat.

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